ATE205266T1 - METHOD FOR TREATING A PAPER PULP AND DEVICE THEREFOR - Google Patents

METHOD FOR TREATING A PAPER PULP AND DEVICE THEREFOR

Info

Publication number
ATE205266T1
ATE205266T1 AT95930746T AT95930746T ATE205266T1 AT E205266 T1 ATE205266 T1 AT E205266T1 AT 95930746 T AT95930746 T AT 95930746T AT 95930746 T AT95930746 T AT 95930746T AT E205266 T1 ATE205266 T1 AT E205266T1
Authority
AT
Austria
Prior art keywords
screen basket
screw
suspension
screen
pulp suspension
Prior art date
Application number
AT95930746T
Other languages
German (de)
Inventor
Kuniaki Saito
Original Assignee
Kvaerner Pulping Tech
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech
Application granted granted Critical
Publication of ATE205266T1 publication Critical patent/ATE205266T1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
    • B01D33/466—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/60—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for washing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B01D33/76—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes
    • B01D33/763—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes for continuously discharging concentrated liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/80—Accessories
    • B01D33/801—Driving means, shaft packing systems or the like
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D21D5/06—Rotary screen-drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/02—Filtering elements having a conical form

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Centrifugal Separators (AREA)
  • Paper (AREA)

Abstract

The present invention relates to a method for treating a pulp suspension in which the suspension is rotated in a rotationally symmetrical, rapidly rotating and permeable screen basket so that the suspension is subjected to the influence of a centrifugal force and dewatered at the same time as the suspension is conveyed by a rotating screw along the inner wall of the screen basket. The invention is characterized in that the suspension is caused to rotate by means which are arranged at the entrance to the screen basket, and in that the outer edges of the said screw bear against or are immediately adjacent to the screen basket and rotate at a higher speed than does the screen basket so that the screw scrapes the inner wall of the screen basket. The invention also relates to a device for implementing the method, which device comprises a housing (12), a screen basket (20) which is rotatably arranged in the said housing (12) and which is provided with screen openings, a screw body (72) which is rotatably arranged in the said screen basket (20) and which is arranged with a screw blade (79), an inlet (59) to the said screen basket (20) for the pulp suspension which is to be treated, an outlet (46, 52) from the said screen basket (20) for the pulp suspension which has been treated, and on outlet (62, 64) from the said housing (12) for liquid which has been removed. The device is characterized in that the said screen basket (20) is able to be rotated, via a transmission (26) which is arranged with a gearing, by a drive element (30), in that the screw body is able to be rotated, via a transmission (84) which is arranged with a gearing, by the said drive element (30), in that the screw blade (79) of the said screw body (72) moves along the inner side of the screen basket (20), with the gearing of the transmissions (26,84) being chosen so that the screw body (72) rotates faster than does the screen basket (20), so that the screw blade (79) has a scraping effect on the inner side of the screen basket (20), and in that an element (102) for initiating rotation of the pulp suspension is arranged at the inlet (59) to the screen basket (20), which element (102) is able to cause the pulp suspension to rotate when it enters the said screen basket (20).
AT95930746T 1995-07-17 1995-07-17 METHOD FOR TREATING A PAPER PULP AND DEVICE THEREFOR ATE205266T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE1995/000862 WO1997004165A1 (en) 1995-07-17 1995-07-17 Method and device for treating a pulp suspension

Publications (1)

Publication Number Publication Date
ATE205266T1 true ATE205266T1 (en) 2001-09-15

Family

ID=20397505

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95930746T ATE205266T1 (en) 1995-07-17 1995-07-17 METHOD FOR TREATING A PAPER PULP AND DEVICE THEREFOR

Country Status (8)

Country Link
US (1) US6071378A (en)
EP (1) EP0839226B1 (en)
JP (1) JP3822907B2 (en)
AT (1) ATE205266T1 (en)
AU (1) AU3401195A (en)
DE (1) DE69522587T2 (en)
FI (1) FI116395B (en)
WO (1) WO1997004165A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11216313A (en) 1998-02-03 1999-08-10 Ishikawajima Harima Heavy Ind Co Ltd Dewatering and concentrating apparatus
SE517532C2 (en) * 2000-10-25 2002-06-18 Rolf Ekholm Method and apparatus for washing a fiber suspension
AT411451B (en) * 2001-11-08 2004-01-26 Andritz Ag Maschf SCREW PRESS FOR SEPARATING LIQUIDS FROM SOLIDS-LIQUID MIXTURES
KR100755440B1 (en) * 2006-06-21 2007-09-05 김영기 Juice squeezing extractor
JP4964053B2 (en) * 2007-07-23 2012-06-27 月島機械株式会社 Filtration device
CA2723579C (en) 2008-05-05 2017-10-24 Fluid-Quip, Inc. Apparatus and method for filtering a material from a liquid medium
CN106615685A (en) 2009-05-26 2017-05-10 富禄德奎普有限公司 Method for producing high-protein corn flour from whole vinasse byproducts
FI121794B (en) * 2009-10-23 2011-04-15 Andritz Oy Device for treating fiber suspension
JP5535985B2 (en) * 2011-05-27 2014-07-02 克之 服部 Waste liquid purification equipment
CA3014750C (en) * 2015-02-23 2021-08-17 Fluid Quip, Inc. Multi-zoned paddle screen apparatus
US10926267B2 (en) 2017-11-27 2021-02-23 Fluid Quip Technologies, Llc Method and system for reducing the unfermentable solids content in a protein portion at the back end of a corn dry milling process
US10875889B2 (en) 2018-12-28 2020-12-29 Fluid Quip Technologies, Llc Method and system for producing a zein protein product from a whole stillage byproduct produced in a corn dry-milling process
CN111298749B (en) * 2020-03-19 2022-02-22 中国热带农业科学院湛江实验站 Bagasse cellulose and lignin centrifugal separation synchronous processing screening equipment
CN113622212B (en) * 2021-08-11 2023-06-27 泰盛科技（集团）股份有限公司 Bamboo pulp fiber screening device
CN113856302A (en) * 2021-10-09 2021-12-31 江苏展之锐医疗科技有限公司 Medical waste liquid collection device
CN114602233A (en) * 2022-03-16 2022-06-10 青岛黄海学院 Industrial engineering waste water waste liquid treatment device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE421434B (en) * 1978-06-14 1981-12-21 Berggren Torsten L SCREW PRESS
NO159494C (en) * 1986-10-23 1989-01-04 Kvaerner Eureka As PROCEDURE BY BLACKING CELLULOSMASS OR FRACTION THEREOF, PLANT FOR USE BY IMPLEMENTING THE PROCEDURE.
SE464640B (en) * 1988-06-16 1991-05-27 Kamyr Ab DEVICE FOR SILENCE OF A SUSPENSION OF A FIBER CELLULOSAMASSA
US4915830A (en) * 1988-08-19 1990-04-10 Sprout-Bauer, Inc. Pulp wash press
SE463425B (en) * 1989-04-17 1990-11-19 Sunds Defibrator Ind Ab dewatering

Also Published As

Publication number Publication date
FI116395B (en) 2005-11-15
WO1997004165A1 (en) 1997-02-06
DE69522587T2 (en) 2002-06-06
FI980082A (en) 1998-01-16
EP0839226B1 (en) 2001-09-05
AU3401195A (en) 1997-02-18
JP3822907B2 (en) 2006-09-20
US6071378A (en) 2000-06-06
FI980082A0 (en) 1998-01-16
EP0839226A1 (en) 1998-05-06
DE69522587D1 (en) 2001-10-11

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
EEFA Change of the company name
REN Ceased due to non-payment of the annual fee